package com.bjb.util;

import org.apache.commons.codec.digest.DigestUtils;

import java.security.MessageDigest;

public class MyMD5Util {

	public static String MD5(String inStr) {
		MessageDigest md5 = null;
		try {
			md5 = MessageDigest.getInstance("MD5");
		} catch (Exception e) {
			System.out.println(e.toString());
			e.printStackTrace();
			return "";
		}
		char[] charArray = inStr.toCharArray();
		byte[] byteArray = new byte[charArray.length];

		for (int i = 0; i < charArray.length; i++)
			byteArray[i] = (byte) charArray[i];

		byte[] md5Bytes = md5.digest(byteArray);

		StringBuffer hexValue = new StringBuffer();

		for (int i = 0; i < md5Bytes.length; i++) {
			int val = ((int) md5Bytes[i]) & 0xff;
			if (val < 16)
				hexValue.append("0");
			hexValue.append(Integer.toHexString(val));
		}

		return hexValue.toString();
	}

	// 可逆的加密算法
	public static String KL(String inStr) {
		return JM(inStr);
	}

	// 加密后解密
	public static String JM(String inStr) {
		char[] a = inStr.toCharArray();
		for (int i = 0; i < a.length; i++) {
			a[i] = (char) (a[i] ^ 'x');
		}
		String k = new String(a);
		return k;
	}

	/**利用MD5进行加密
     * @param str  待加密的字符串
     * @return  加密后的字符串
	 * @author majm
	 * @date 2017年2月27日 上午11:56:32
	 */
    public static String EncoderByMd5(String str){
        //确定计算方法
        String result="";
        result = DigestUtils.md5Hex(str);
        //加密后的字符串
        return result;
    }

    public static void main(String[] args) {
    	System.out.println(JM("18796879339"));
		System.out.println(KL("IMAKOMMIOJH"));
//		System.out.println(JM("IMI@@MJLJMA"));
//		System.out.println(MD5("123456"));
	}
}
